add open options shortcut for ext

public/_locales/en/messages.json

@@ -10,5 +10,8 @@
   },
   "toggle_style": {
     "message": "Toggle Style"
+  },
+  "open_options": {
+    "message": "Open Options"
   }
 }

public/_locales/zh_CN/messages.json

@@ -6,9 +6,12 @@
     "message": "一个简约的双语网页翻译扩展 & 油猴脚本"
   },
   "toggle_translate": {
-    "message": "切换翻译"
+    "message": "开启翻译"
   },
   "toggle_style": {
     "message": "切换样式"
+  },
+  "open_options": {
+    "message": "打开设置"
   }
 }

public/manifest.firefox.json

@@ -33,6 +33,12 @@
         "default": "Alt+C"
       },
       "description": "__MSG_toggle_style__"
+    },
+    "openOptions": {
+      "suggested_key": {
+        "default": "Alt+O"
+      },
+      "description": "__MSG_open_options__"
     }
   },
   "permissions": ["<all_urls>", "storage"],

public/manifest.json

@@ -34,6 +34,12 @@
         "default": "Alt+C"
       },
       "description": "__MSG_toggle_style__"
+    },
+    "openOptions": {
+      "suggested_key": {
+        "default": "Alt+O"
+      },
+      "description": "__MSG_open_options__"
     }
   },
   "permissions": ["storage"],